Infrastructure for maintaining a directory with index files

[Robert Collins]

On Sun, 2009-12-13 at 21:40 +0100, Jelmer Vernooij wrote:
> Hi,
> 
> I'm currently trying to use BTreeIndex to store the SHA map in bzr-git.
> With the current prototype I have this seems to work quite well. 
> 
> Is there any helper class that can assist me in working with a directory
> with index files, or (if there isn't) would it make sense to create one?

I started on a 'littletable' project but its not really mature enough to
use yet.

> bzrlib and bzr-search both do their own management (auto-packing, format
> checking, dealing with uploading new indexes) at the moment. This is a
> relatively large amount of code that I would rather avoid duplicating in
> bzr-svn, bzr-git and bzr-hg. 

If you were to create a class that is ignorant of the internals that it
is managing and is given various callbacks, that would be a nice step.
Ideally that could simplify some of the repository pack classes too.

-Rob
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